Sep 10 10:44:40.811 INFO checking rust-mpfr-0.1.7 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 10:44:40.811 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 10:44:40.811 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-6/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 10:44:40.969 INFO blam! 848884dbe9fec1a6b904413e20566bfbbaf58e4963f567926a9db0e262586603
Sep 10 10:44:40.971 INFO running `"docker" "start" "-a" "848884dbe9fec1a6b904413e20566bfbbaf58e4963f567926a9db0e262586603"`
Sep 10 10:44:41.896 INFO kablam! usermod: no changes
Sep 10 10:44:41.948 INFO kablam!     Checking rust-mpfr v0.1.7 (file:///source)
Sep 10 10:44:42.542 INFO kablam! warning: unused arithmetic operation which must be used
Sep 10 10:44:42.542 INFO kablam!   --> src/test.rs:42:5
Sep 10 10:44:42.542 INFO kablam!    |
Sep 10 10:44:42.542 INFO kablam! 42 |     x / y;
Sep 10 10:44:42.542 INFO kablam!    |     ^^^^^
Sep 10 10:44:42.542 INFO kablam!    |
Sep 10 10:44:42.542 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Sep 10 10:44:42.542 INFO kablam! 
Sep 10 10:44:42.576 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
Sep 10 10:44:42.578 INFO kablam! su: No module specific data is present
Sep 10 10:44:43.492 INFO running `"docker" "rm" "-f" "848884dbe9fec1a6b904413e20566bfbbaf58e4963f567926a9db0e262586603"`
Sep 10 10:44:43.568 INFO blam! 848884dbe9fec1a6b904413e20566bfbbaf58e4963f567926a9db0e262586603